Institution: | 1. Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan;2. Department of Physics, Faculty of Science, University of Jazan, Jazan, Kingdom of Saudi Arabia;3. Department of Physics, Gomal University, D.I. Khan 29050, Pakistan;4. National Center for Physics, Quaid-i-Azam University Campus, Islamabad 45320, Pakistan |